Giuseppe Sacco ha scritto:
On Mon, 03 Dec 2007 20:49:37 +0100 Matteo Piccolo <[EMAIL PROTECTED]> wrote:
[...]
all'avvio (la schermata prima del boot) mi riconosce i 2giga di ram, poi quando avvio linux me ne riconosce solo 896M.

"all'avvio" vuol dire che il BIOS ti dice che ci sono 2048mb? Oppure che linux 
che riconosce 2048 e poi cambia idea?
Oltre a hwinfo, puoi provare dmidecode?


si, all'avvio intendo il bios.
dmidecode pare che riconosca (o almeno mi sembra di capire)....

[...]
Memory Module Information
   Socket Designation: DIMM0
   Bank Connections: 6 1
   Current Speed: 30 ns
   Type: ECC DIMM
   Installed Size: 1024 MB (Double-bank Connection)
   Enabled Size: 1024 MB (Double-bank Connection)
   Error Status: OK

Handle 0x0009, DMI type 6, 12 bytes
Memory Module Information
   Socket Designation: DIMM1
   Bank Connections: 6 1
   Current Speed: 30 ns
   Type: ECC DIMM
   Installed Size: 1024 MB (Double-bank Connection)
   Enabled Size: 1024 MB (Double-bank Connection)
   Error Status: OK
[...]

Allego anche l'output di dmicode.
# dmidecode 2.9
SMBIOS 2.4 present.
54 structures occupying 2032 bytes.
Table at 0x000F0750.

Handle 0x0000, DMI type 0, 24 bytes
BIOS Information
        Vendor: American Megatrends Inc.
        Version: 0504   
        Release Date: 08/08/2006
        Address: 0xF0000
        Runtime Size: 64 kB
        ROM Size: 2048 kB
        Characteristics:
                ISA is supported
                PCI is supported
                PNP is supported
                APM is supported
                BIOS is upgradeable
                BIOS shadowing is allowed
                ESCD support is available
                Boot from CD is supported
                Selectable boot is supported
                BIOS ROM is socketed
                EDD is supported
                5.25"/1.2 MB floppy services are supported (int 13h)
                3.5"/720 KB floppy services are supported (int 13h)
                3.5"/2.88 MB floppy services are supported (int 13h)
                Print screen service is supported (int 5h)
                8042 keyboard services are supported (int 9h)
                Serial services are supported (int 14h)
                Printer services are supported (int 17h)
                CGA/mono video services are supported (int 10h)
                ACPI is supported
                USB legacy is supported
                LS-120 boot is supported
                ATAPI Zip drive boot is supported
                BIOS boot specification is supported
        BIOS Revision: 8.12

Handle 0x0001, DMI type 1, 27 bytes
System Information
        Manufacturer: System manufacturer
        Product Name: System Product Name
        Version: System Version
        Serial Number: System Serial Number
        UUID: 2C8F408C-74FE-D511-8F75-7E0417B7C5FF
        Wake-up Type: Power Switch
        SKU Number: To Be Filled By O.E.M.
        Family: To Be Filled By O.E.M.

Handle 0x0002, DMI type 2, 15 bytes
Base Board Information
        Manufacturer: ASUSTeK Computer INC.
        Product Name: M2V
        Version: Rev 1.xx
        Serial Number: MB-1234567890
        Asset Tag: To Be Filled By O.E.M.
        Features:
                Board is a hosting board
                Board is replaceable
        Location In Chassis: To Be Filled By O.E.M.
        Chassis Handle: 0x0003
        Type: Motherboard
        Contained Object Handles: 0

Handle 0x0003, DMI type 3, 21 bytes
Chassis Information
        Manufacturer: Chassis Manufacture
        Type: Desktop
        Lock: Not Present
        Version: Chassis Version
        Serial Number: Chassis Serial Number
        Asset Tag: Asset-1234567890
        Boot-up State: Safe
        Power Supply State: Safe
        Thermal State: Safe
        Security Status: None
        OEM Information: 0x00000001
        Height: Unspecified
        Number Of Power Cords: 1
        Contained Elements: 0

Handle 0x0004, DMI type 4, 35 bytes
Processor Information
        Socket Designation: SOCKET AM2
        Type: Central Processor
        Family: Athlon 64
        Manufacturer: AMD              
        ID: F2 0F 04 00 FF FB 8B 07
        Signature: Family 15, Model 79, Stepping 2
        Flags:
                FPU (Floating-point unit on-chip)
                VME (Virtual mode extension)
                DE (Debugging extension)
                PSE (Page size extension)
                TSC (Time stamp counter)
                MSR (Model specific registers)
                PAE (Physical address extension)
                MCE (Machine check exception)
                CX8 (CMPXCHG8 instruction supported)
                APIC (On-chip APIC hardware supported)
                SEP (Fast system call)
                MTRR (Memory type range registers)
                PGE (Page global enable)
                MCA (Machine check architecture)
                CMOV (Conditional move instruction supported)
                PAT (Page attribute table)
                PSE-36 (36-bit page size extension)
                CLFSH (CLFLUSH instruction supported)
                MMX (MMX technology supported)
                FXSR (Fast floating-point save and restore)
                SSE (Streaming SIMD extensions)
                SSE2 (Streaming SIMD extensions 2)
        Version: AMD Athlon(tm) 64 Processor 3500+                   
        Voltage: 1.5 V
        External Clock: 200 MHz
        Max Speed: 3000 MHz
        Current Speed: 2200 MHz
        Status: Populated, Enabled
        Upgrade: Socket 939
        L1 Cache Handle: 0x0005
        L2 Cache Handle: 0x0006
        L3 Cache Handle: 0x0007
        Serial Number: To Be Filled By O.E.M.
        Asset Tag: To Be Filled By O.E.M.
        Part Number: To Be Filled By O.E.M.

Handle 0x0005, DMI type 7, 19 bytes
Cache Information
        Socket Designation: L1-Cache
        Configuration: Enabled, Not Socketed, Level 1
        Operational Mode: Varies With Memory Address
        Location: Internal
        Installed Size: 64 KB
        Maximum Size: 64 KB
        Supported SRAM Types:
                Pipeline Burst
        Installed SRAM Type: Pipeline Burst
        Speed: Unknown
        Error Correction Type: Single-bit ECC
        System Type: Data
        Associativity: 4-way Set-associative

Handle 0x0006, DMI type 7, 19 bytes
Cache Information
        Socket Designation: L2-Cache
        Configuration: Enabled, Not Socketed, Level 2
        Operational Mode: Varies With Memory Address
        Location: Internal
        Installed Size: 512 KB
        Maximum Size: 512 KB
        Supported SRAM Types:
                Pipeline Burst
        Installed SRAM Type: Pipeline Burst
        Speed: Unknown
        Error Correction Type: Single-bit ECC
        System Type: Unified
        Associativity: 4-way Set-associative

Handle 0x0007, DMI type 7, 19 bytes
Cache Information
        Socket Designation: L3-Cache
        Configuration: Disabled, Not Socketed, Level 3
        Operational Mode: Unknown
        Location: Internal
        Installed Size: 0 KB
        Maximum Size: 0 KB
        Supported SRAM Types:
                Unknown
        Installed SRAM Type: Unknown
        Speed: Unknown
        Error Correction Type: Unknown
        System Type: Unknown
        Associativity: Unknown

Handle 0x0008, DMI type 6, 12 bytes
Memory Module Information
        Socket Designation: DIMM0
        Bank Connections: 6 1
        Current Speed: 30 ns
        Type: ECC DIMM
        Installed Size: 1024 MB (Double-bank Connection)
        Enabled Size: 1024 MB (Double-bank Connection)
        Error Status: OK

Handle 0x0009, DMI type 6, 12 bytes
Memory Module Information
        Socket Designation: DIMM1
        Bank Connections: 6 1
        Current Speed: 30 ns
        Type: ECC DIMM
        Installed Size: 1024 MB (Double-bank Connection)
        Enabled Size: 1024 MB (Double-bank Connection)
        Error Status: OK

Handle 0x000A, DMI type 6, 12 bytes
Memory Module Information
        Socket Designation: DIMM2
        Bank Connections: None
        Current Speed: Unknown
        Type: Unknown
        Installed Size: Not Installed
        Enabled Size: Not Installed
        Error Status: OK

Handle 0x000B, DMI type 6, 12 bytes
Memory Module Information
        Socket Designation: DIMM3
        Bank Connections: None
        Current Speed: Unknown
        Type: Unknown
        Installed Size: Not Installed
        Enabled Size: Not Installed
        Error Status: OK

Handle 0x000C, DMI type 8, 9 bytes
Port Connector Information
        Internal Reference Designator: PS/2 Mouse
        Internal Connector Type: None
        External Reference Designator: PS2Mouse
        External Connector Type: PS/2
        Port Type: Mouse Port

Handle 0x000D, DMI type 8, 9 bytes
Port Connector Information
        Internal Reference Designator: PS/2 Keyboard
        Internal Connector Type: None
        External Reference Designator: Keyboard
        External Connector Type: PS/2
        Port Type: Keyboard Port

Handle 0x000E, DMI type 8, 9 bytes
Port Connector Information
        Internal Reference Designator: USB1
        Internal Connector Type: None
        External Reference Designator: USB1
        External Connector Type: Access Bus (USB)
        Port Type: USB

Handle 0x000F, DMI type 8, 9 bytes
Port Connector Information
        Internal Reference Designator: USB2
        Internal Connector Type: None
        External Reference Designator: USB2
        External Connector Type: Access Bus (USB)
        Port Type: USB

Handle 0x0010, DMI type 8, 9 bytes
Port Connector Information
        Internal Reference Designator: USB3
        Internal Connector Type: None
        External Reference Designator: USB3
        External Connector Type: Access Bus (USB)
        Port Type: USB

Handle 0x0011, DMI type 8, 9 bytes
Port Connector Information
        Internal Reference Designator: USB4
        Internal Connector Type: None
        External Reference Designator: USB4
        External Connector Type: Access Bus (USB)
        Port Type: USB

Handle 0x0012, DMI type 8, 9 bytes
Port Connector Information
        Internal Reference Designator: LPT1
        Internal Connector Type: None
        External Reference Designator: LPT1
        External Connector Type: DB-25 female
        Port Type: Parallel Port ECP/EPP

Handle 0x0013, DMI type 8, 9 bytes
Port Connector Information
        Internal Reference Designator: Audio Line_Out
        Internal Connector Type: None
        External Reference Designator: Audio Line_Out
        External Connector Type: Mini Jack (headphones)
        Port Type: Audio Port

Handle 0x0014, DMI type 8, 9 bytes
Port Connector Information
        Internal Reference Designator: Audio Line_In
        Internal Connector Type: None
        External Reference Designator: Audio Line_In
        External Connector Type: Mini Jack (headphones)
        Port Type: Audio Port

Handle 0x0015, DMI type 8, 9 bytes
Port Connector Information
        Internal Reference Designator: Audio Mic_In
        Internal Connector Type: None
        External Reference Designator: Audio Mic_In
        External Connector Type: Mini Jack (headphones)
        Port Type: Audio Port

Handle 0x0016, DMI type 8, 9 bytes
Port Connector Information
        Internal Reference Designator: LAN1
        Internal Connector Type: None
        External Reference Designator: LAN1
        External Connector Type: RJ-45
        Port Type: Network Port

Handle 0x0017, DMI type 8, 9 bytes
Port Connector Information
        Internal Reference Designator: PRI IDE
        Internal Connector Type: On Board IDE
        External Reference Designator: Not Specified
        External Connector Type: None
        Port Type: Other

Handle 0x0018, DMI type 8, 9 bytes
Port Connector Information
        Internal Reference Designator: SEC IDE
        Internal Connector Type: On Board IDE
        External Reference Designator: Not Specified
        External Connector Type: None
        Port Type: Other

Handle 0x0019, DMI type 8, 9 bytes
Port Connector Information
        Internal Reference Designator: SB_SATA1
        Internal Connector Type: On Board IDE
        External Reference Designator: Not Specified
        External Connector Type: None
        Port Type: Other

Handle 0x001A, DMI type 8, 9 bytes
Port Connector Information
        Internal Reference Designator: SB_SATA2
        Internal Connector Type: On Board IDE
        External Reference Designator: Not Specified
        External Connector Type: None
        Port Type: Other

Handle 0x001B, DMI type 8, 9 bytes
Port Connector Information
        Internal Reference Designator: FLOPPY
        Internal Connector Type: On Board Floppy
        External Reference Designator: Not Specified
        External Connector Type: None
        Port Type: Other

Handle 0x001C, DMI type 8, 9 bytes
Port Connector Information
        Internal Reference Designator: USB5
        Internal Connector Type: Access Bus (USB)
        External Reference Designator: Not Specified
        External Connector Type: None
        Port Type: USB

Handle 0x001D, DMI type 8, 9 bytes
Port Connector Information
        Internal Reference Designator: USB6
        Internal Connector Type: Access Bus (USB)
        External Reference Designator: Not Specified
        External Connector Type: None
        Port Type: USB

Handle 0x001E, DMI type 8, 9 bytes
Port Connector Information
        Internal Reference Designator: USB7
        Internal Connector Type: Access Bus (USB)
        External Reference Designator: Not Specified
        External Connector Type: None
        Port Type: USB

Handle 0x001F, DMI type 8, 9 bytes
Port Connector Information
        Internal Reference Designator: USB8
        Internal Connector Type: Access Bus (USB)
        External Reference Designator: Not Specified
        External Connector Type: None
        Port Type: USB

Handle 0x0020, DMI type 9, 13 bytes
System Slot Information
        Designation: PCIEx1
        Type: 32-bit PCI Express
        Current Usage: Available
        Length: Long
        ID: 13
        Characteristics:
                3.3 V is provided
                Opening is shared
                PME signal is supported

Handle 0x0021, DMI type 9, 13 bytes
System Slot Information
        Designation: PCIEx16
        Type: 32-bit PCI Express
        Current Usage: In Use
        Length: Long
        ID: 11
        Characteristics:
                3.3 V is provided
                Opening is shared
                PME signal is supported

Handle 0x0022, DMI type 9, 13 bytes
System Slot Information
        Designation: PCI1
        Type: 32-bit PCI
        Current Usage: Available
        Length: Short
        ID: 1
        Characteristics:
                3.3 V is provided
                Opening is shared
                PME signal is supported

Handle 0x0023, DMI type 9, 13 bytes
System Slot Information
        Designation: PCI2
        Type: 32-bit PCI
        Current Usage: In Use
        Length: Short
        ID: 2
        Characteristics:
                3.3 V is provided
                Opening is shared
                PME signal is supported

Handle 0x0024, DMI type 9, 13 bytes
System Slot Information
        Designation: PCI3
        Type: 32-bit PCI
        Current Usage: Available
        Length: Short
        ID: 3
        Characteristics:
                3.3 V is provided
                Opening is shared
                PME signal is supported

Handle 0x0025, DMI type 9, 13 bytes
System Slot Information
        Designation: PCI4
        Type: 32-bit PCI
        Current Usage: Available
        Length: Short
        ID: 4
        Characteristics:
                3.3 V is provided
                Opening is shared
                PME signal is supported

Handle 0x0026, DMI type 10, 6 bytes
On Board Device Information
        Type: Video
        Status: Enabled
        Description:   To Be Filled By O.E.M.

Handle 0x0027, DMI type 11, 5 bytes
OEM Strings
        String 1: To Be Filled By O.E.M.
        String 2: To Be Filled By O.E.M.
        String 3: To Be Filled By O.E.M.
        String 4: To Be Filled By O.E.M.

Handle 0x0028, DMI type 13, 22 bytes
BIOS Language Information
        Installable Languages: 1
                en|US|iso8859-1
        Currently Installed Language: en|US|iso8859-1

Handle 0x0029, DMI type 15, 35 bytes
System Event Log
        Area Length: 4 bytes
        Header Start Offset: 0x0000
        Header Length: 2 bytes
        Data Start Offset: 0x0002
        Access Method: Indexed I/O, one 16-bit index port, one 8-bit data port
        Access Address: Index 0x046A, Data 0x046C
        Status: Invalid, Not Full
        Change Token: 0x00000000
        Header Format: No Header
        Supported Log Type Descriptors: 6
        Descriptor 1: End of log
        Data Format 1: OEM-specific
        Descriptor 2: End of log
        Data Format 2: OEM-specific
        Descriptor 3: End of log
        Data Format 3: OEM-specific
        Descriptor 4: End of log
        Data Format 4: OEM-specific
        Descriptor 5: End of log
        Data Format 5: OEM-specific
        Descriptor 6: End of log
        Data Format 6: OEM-specific

Handle 0x002A, DMI type 16, 15 bytes
Physical Memory Array
        Location: System Board Or Motherboard
        Use: System Memory
        Error Correction Type: None
        Maximum Capacity: 8 GB
        Error Information Handle: Not Provided
        Number Of Devices: 4

Handle 0x002B, DMI type 19, 15 bytes
Memory Array Mapped Address
        Starting Address: 0x00000000000
        Ending Address: 0x0007FFFFFFF
        Range Size: 2 GB
        Physical Array Handle: 0x002A
        Partition Width: 0

Handle 0x002C, DMI type 17, 27 bytes
Memory Device
        Array Handle: 0x002A
        Error Information Handle: Not Provided
        Total Width: 64 bits
        Data Width: 72 bits
        Size: 1024 MB
        Form Factor: DIMM
        Set: None
        Locator: DIMM0
        Bank Locator: BANK0
        Type: DDR2
        Type Detail: Synchronous
        Speed: 333 MHz (3.0 ns)
        Manufacturer: Manufacturer0
        Serial Number: SerNum0
        Asset Tag: AssetTagNum0
        Part Number: PartNum0

Handle 0x002D, DMI type 20, 19 bytes
Memory Device Mapped Address
        Starting Address: 0x00000000000
        Ending Address: 0x0003FFFFFFF
        Range Size: 1 GB
        Physical Device Handle: 0x002C
        Memory Array Mapped Address Handle: 0x002B
        Partition Row Position: 1

Handle 0x002E, DMI type 17, 27 bytes
Memory Device
        Array Handle: 0x002A
        Error Information Handle: Not Provided
        Total Width: 64 bits
        Data Width: 72 bits
        Size: 1024 MB
        Form Factor: DIMM
        Set: None
        Locator: DIMM1
        Bank Locator: BANK1
        Type: DDR2
        Type Detail: Synchronous
        Speed: 333 MHz (3.0 ns)
        Manufacturer: Manufacturer1
        Serial Number: SerNum1
        Asset Tag: AssetTagNum1
        Part Number: PartNum1

Handle 0x002F, DMI type 20, 19 bytes
Memory Device Mapped Address
        Starting Address: 0x00040000000
        Ending Address: 0x0007FFFFFFF
        Range Size: 1 GB
        Physical Device Handle: 0x002E
        Memory Array Mapped Address Handle: 0x002B
        Partition Row Position: 1

Handle 0x0030, DMI type 17, 27 bytes
Memory Device
        Array Handle: 0x002A
        Error Information Handle: Not Provided
        Total Width: Unknown
        Data Width: Unknown
        Size: No Module Installed
        Form Factor: DIMM
        Set: None
        Locator: DIMM2
        Bank Locator: BANK2
        Type: Unknown
        Type Detail: Unknown
        Speed: Unknown
        Manufacturer: Manufacturer2
        Serial Number: SerNum2
        Asset Tag: AssetTagNum2
        Part Number: PartNum2

Handle 0x0031, DMI type 126, 19 bytes
Inactive

Handle 0x0032, DMI type 17, 27 bytes
Memory Device
        Array Handle: 0x002A
        Error Information Handle: Not Provided
        Total Width: Unknown
        Data Width: Unknown
        Size: No Module Installed
        Form Factor: DIMM
        Set: None
        Locator: DIMM3
        Bank Locator: BANK3
        Type: Unknown
        Type Detail: Unknown
        Speed: Unknown
        Manufacturer: Manufacturer3
        Serial Number: SerNum3
        Asset Tag: AssetTagNum3
        Part Number: PartNum3

Handle 0x0033, DMI type 126, 19 bytes
Inactive

Handle 0x0034, DMI type 32, 20 bytes
System Boot Information
        Status: No errors detected

Handle 0x0035, DMI type 127, 4 bytes
End Of Table

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